Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (13): 1982-1988.doi: 10.3969/j.issn.2095-4344.1678

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Preincubation with low-concentration hydrogen peroxide enhances anti-oxidative stress ability of bone marrow mesenchymal stem cells

Yuan Dajiang, Peng Wuxun, Zhang Fei, Wang Zhenwen, Zheng Yinggang   

  1. Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Revised:2018-12-19 Online:2019-05-08 Published:2019-05-08
  • Contact: Peng Wuxun, MD, Professor, Chief physician, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Yuan Dajiang, Master candidate, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:

    Guizhou Provincial Department of Technology & Guizhou Medical University Joint Fund Project, No. LH[2017]7197 (to PWX); Guizhou Province Health and Welfare Commission Fund Project, No. gzwjkj 2016-1-001 (to PWX); Guiyang Science and Technology Bureau Fund Project, No. GY2016-3 (to PWX)

Abstract:

BACKGROUND: Bone marrow mesenchymal stem cell transplantation promotes vascular regeneration and bone remodeling in osteonecrosis area, and has achieved certain effects. However, the oxidative stress microenvironment in osteonecrosis area greatly limits the survival, proliferation and osteogenesis of bone marrow mesenchymal stem cells after transplantation, reducing the repairing effect on the osteonecrosis area.
OBJECTIVE: To investigate the effect of low-concentration hydrogen peroxide (H2O2) pretreatment on the anti-oxidative stress injury to bone marrow mesenchymal stem cells.
METHODS: The third generation of well-growing bone marrow mesenchymal stem cells were divided into three groups: blank control group, high-concentration H2O2 treatment group (500 µmol/L H2O2 treatment for 24 hours), low-concentration H2O2 pretreatment group (50 µmol/L H2O2 pretreatment for 8 hours, recovery for 12 hours, and then 500 µmol/L H2O2 treatment for 24 hours). Cellular level of reactive oxygen species was detected by DCFH-DA fluorescent dye; superoxide dismutase and catalase activities were detected by ELISA; malondialdehyde content was detected by colorimetry; mitochondrial membrane potential was detected by JC-1; cell viability was detected by cell counting kit-8; and cell apoptosis was detected by flow cytometry and TUNEL/DAPI double staining.
RESULTS AND CONCLUSION: Compared with the high-concentration H2O2 treatment group, the low-concentration H2O2 pretreatment group could effectively reduce the production of reactive oxygen species in the bone marrow mesenchymal stem cells (P < 0.05); meanwhile, the low-concentration H2O2 pretreatment group showed significantly increased superoxide dismutase and catalase activities (P < 0.05), decreased malondialdehyde content (P < 0.05), reduced mitochondrial membrane potential damage (P< 0.05), increased cell survival rate (P < 0.05) and decreased cell apoptosis (P < 0.05). These findings indicate that low-concentration H2O2 pretreatment could significantly enhance the ability of bone marrow mesenchymal stem cells to resist oxidative stress injury.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Bone Marrow, Mesenchymal Stem Cells, Hydrogen Peroxide, Membrane Potential, Mitochondrial, Apoptosis, Tissue Engineering

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